What is the steel capital of the world?

Pittsburgh, Pennsylvania, is often referred to as the steel capital of the world due to its historical significance in the steel industry during the late 19th and early 20th centuries. The city became a major hub for steel production, attracting numerous steel mills and factories. Although the industry has declined since its peak, Pittsburgh's legacy as a center of steel manufacturing remains a key part of its identity. Today, the city has diversified its economy and is known for technology and healthcare sectors.